Photonic Integrated Circuits: Design, Applications and Future Challenges

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Circuit and Signal Processing".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 3059

Special Issue Editor


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Guest Editor
Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
Interests: integrated photonics; optical sensing; optical communication; metrology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Photonic integrated circuit (PIC) technologies have developed tremendously in recent years. The mainstream technologies (InP, SOI and SiN) have reached a phase in which they have become generic platforms. This entails access to the technology for other users (e.g., SMEs, smaller universities) that are not able to develop PIC technology by themselves. Furthermore, generic technologies and pre-defined libraries of integrated photonic components have opened up new ways of PIC development by assembling these existing components in more sophisticated circuits offering new functionalities (in a similar way to electronic integrated circuits, which are assembled from already-developed transistors).

Simultaneously, the development of new optical sub-components is also continuing, aiming both at novel structures (e.g., introduction of new types of modulators or light sources) and novel application areas (e.g., widening the operation wavelength range to both VIS and longer IR regions).

Finally, a lot of niche, non-mainstream PIC technologies are being developed, including glasses, polymers or oxides (e.g., TiO or TaO), offering new capabilities for low-volume fabrication of non-standard PICs.

The objective of this Special Issue is to present some of these extraordinary developments of photonic integrated circuits with a special emphasis on non-standard solutions both in the field of non-standard material platforms or sub-components as well as in the field of new PIC architectures using generic technologies. Therefore, all researchers working on PICs, regardless of whether they are working on technology development or working on new architectures basing on generic sub-components, are invited to submit their manuscripts to this Special Issue and contribute with their device concepts, original studies or reviews.  

Dr. Andrzej Kaźmierczak
Guest Editor

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Keywords

  • Photonics integrated circuits architectures
  • PIC generic technologies
  • Polymer photonics
  • Photonics integration
  • Integrated photonics devices

Published Papers (1 paper)

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Research

17 pages, 3236 KiB  
Article
Highly Sensitive Sensor Structure Based on Sol-Gel Waveguide Films and Grating Couplers
by Paweł Karasiński, Andrzej Kaźmierczak, Magdalena Zięba, Cuma Tyszkiewicz, Katarzyna Wojtasik and Paweł Kielan
Electronics 2021, 10(12), 1389; https://doi.org/10.3390/electronics10121389 - 09 Jun 2021
Cited by 8 | Viewed by 1719
Abstract
The technologies of optical planar evanescent wave chemical and biochemical sensors require chemically resistant, high refractive index waveguide films having very good optical transmission properties. In this paper we present such two-compound SiOx:TiOy waveguide films fabricated by using the sol-gel [...] Read more.
The technologies of optical planar evanescent wave chemical and biochemical sensors require chemically resistant, high refractive index waveguide films having very good optical transmission properties. In this paper we present such two-compound SiOx:TiOy waveguide films fabricated by using the sol-gel method and the dip-coating technique. These films not only have high optical quality and low propagation losses but also an extremely high refractive index of >1.90 (λ = 632.8 nm). Further we demonstrate efficient and simple sensing structures, designed and fabricated based on these films. For this purpose, grating couplers with a period of Λ = 417 nm were fabricated on the interface between a waveguide film and cover using the single-step nanoimprint method. These sensing structures were tested as planar refractometers. The results of the theoretical analysis on the basis of which the structures were designed as well as results of their experimental characterization are presented in this work. Consequently, the relationship between parameters and the sensitivity of investigated sensing structures is discussed. As a result, the profitable properties of the designed grating coupler sensors are verified and excellent consistency between the results of the theoretical analysis and experimental results is achieved. Full article
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